Type-writing machine



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J. A. WALLACE.V TYPE WRITING MACHINE.

- Patented Mar. 18, 1890.

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Patented Mar. 18, 1890.

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J.A. WALLACE.

I TYPE WRITING MACHINE.

No. 423,644. Patented Manjl, 1890.

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TYPE WRITING MACHINE. No. 423,644. Patented Mar. 18, 1890.

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" UNITED STATES PATENT OFFICE.

JAMES A. WALLACE, OF ALEXIS, ILLINOIS. i

TYPE-WRITING MACH I N E.

SPECIFICATION forming' part of Letters Patent No. 423,644, dated March18, 1890. Application filed May 18, 1889. Serial No. 311,237. (Nomodel.)

To all whom it may concern:

Be it known that I, JAMES A. VALLAOE, of Alexis, in the county of Warrenand State of Illinois, have invented a newV and Improved Type-WritingMachine, .of which the following is a description, reference being hadto the annexed drawings, forming a part thereof, in which- Figure l is aplan View of my improved type -Writen Fig. 2 is a detail perspectiveview of one of the type-plate-carrying brackets. Fig. 3 is a rearelevation. Fig. iis a plan View of the type-shifting mechanism. Fig. 5is a transverse section taken on line a; in Fig. 3. Fig. 6 is aplan viewof the paper-carriage. Fig. 6a is a detail side elevation' of thecomb-tightening device. Fig. 7 is a detail side elevation of theregistering and printing mechanism. Fig. 8 is a side elevation of theplaten. Fig. 9 is a side elevation of the spiral cam, and Fig. 10 is aninverted plan view ofthe type-plate.

Similar letters of reference indicate corresponding parts in all theviews.

The'object of my invention is to provide a type-Writer which will besimple and inexpensive in its construction, easily' operated, and

which will produce Writing having perfect alignment. Y

--My invention consists in the combination after fully described.

The main frame of themachine consists of the base-plate A, thelongitudinal bars B B',

the standards C C', supporting the said bars, and the cross-bars D D',connecting the longitudinal bars B B at the ends of the frame. Thestandards C support a cylindrical rod E, which forms a guide for lthepaper-carriage. The side bars B B form a guide forthe typeplate carriageF, the said carriage being furnished with ilanges b c, which extendpartly over the upper surfaces of the bars B B'.

To the ends of the type-plate carriage F are fitted slides d, to whichare attached the typeplate-carrying brackets a, which are turnedinwardly at their lower ends to receive the type-plate G. The type-plateG is secured to the brackets a by screws e.

In the'top of the type-plate carriage F are pivoted iwo similar1 leversf f which engage each other at the center of the carriage, and whichalso engage the slides d and brackets a, so as to cause the said slidesto move in unison.

' To the type-plate carriage is attached an index g, which moves alongthe letter-plate h,

attached tothe bar B of the frame, and to the said type-plate carriage Fis secured ahandle I, by which it may be moved longitudinally in theframe.

To the base A, at the center of the machine,

ported by the standards n n2, extending up- Wardly from the end bars mm', and the paper-guide o.

In the end pieces m m of the frame of the paper-carriage is j ournaledapaper-feed roller p. To one of the journals'of the said paperfeedrolleris attached a miter-Wheel q,-Which is engaged by a miter-Wheel r on theshaft s, journaled in the bracket t, attached to the end piece m' of thepaper-carriage frame. To the other journal of the said roller isattached a milled Wheel p2, by which the paper may be rolled through themachine. Upon the said shaft s, near its outer end, is secured aratchet-wheel u, and upon the shaft outside of the said ratchet-wheel isplaced a lever c, which carries a paWl fw, arranged to engage theratchetwheel u.

In the end pieces m m' of the paper-carriage frame J, and a shortdistance above the paperguide o, is journaled a rock-shaft o', carryinga spring-metal comb 0.', the teeth of which rest upon the roller p, andto the said shaft o is attached an arm o2, provided at the end thereofwith a curved slot, which is adapted to slide over a threaded stud o3,projecting from the side piece m, the said stud o being provided With anut 04 for clamping the varm o2 in any desired position, the objectbeing to vary the pressure of the comb a upon the -roller p.

To the bar B' atthe rear of the machine is IOO r when the said'key-leverO is depressed.

attached a plate K, provided with ears b', which support the rock-shaftc.

To the rock-shaft c is att-ached the printing-lever L, which reachesover the top of the type-plate G and is provided with a stud d', whichis adapted to strike the top of the typeplate G and produce the impression of a single letter upon the paper resting on the platen k. Theprinting-lever L is normally maintained in an elevated position by thespring e', which engages the ears b and the said lever.

In'ears g', projecting downward from th plate K, is pivotcd theregistering-lever M, one end of which extends through a loop N, carriedby the lever L, the other being provided with a V-shaped edge adapted toengage the serrated lower edge of the ratchet-bar n.

Between ears h', projecting from the bar B', is pivoted a key-lever O,which extends to the cross-bar D and is pressed upward by a spring, i',the upward motion of the said lever being limited by a stop j. To an ear7c', attached to the bar B', is' pivoted a slotted lever l', to the freeend of which is jointed a pawl O, which is adapted to act upon theratchet-bar n. ing from the side of the key-lever O, enters the slot ofthe lever Z', so .that when the lever O is depressed in the operation ofprinting,

-as will be presently described, it iirst causes' the pawl O to engagethe ratchet-bar n.

To the key-lever O is attached abar q,which extends down through anaperturein the bar B- in position to engage the printing-lever L, Thebar q is provided with a right-angled arm r', which projects over theflange c of the typeplate carriage F, and carries apin in position toenter any one of a series of holes s in the said iiange and cause thetype-plate carriage to register, so that the impressions of the lettersor characters on the paper will be proplerly arranged with reference toeach other.

At the same time the said pin holds the carriage stationary luntil 'theprinting is done.

To the side ofthe key-lever O, near its free end, is pivoted aspacing-key O2, which is provided with a downwardly-proj ecting lever'O3, which reaches below the key-lever, and a thumb-piece O4, whichextends over the top of the key-lever. The saidv spacing-key O2 4doesnot interfere with the free action of they key-lever O. The saidkey-lever O, when depressed, effects the printing and also Y themovement of the paper-carriage; but when the key-'lever O is moved bytouching the spacing-key O2 the said spacing-key carries the key-lever Odown far enough to move the vpeper-carriage, but not sufficiently toeffect the printing, as the ear O3 strikes the frame of'zthe machine andlimits the movement of the said lever O. The downward movement of thekey-lever O is limited bya spiral cam O5, pivotcd to the bar B of themachineframe and adapted to turn so as to arrest the downward movementof the key-lever sooner A stud p', project-` when the arm u is releasedfrom the trip t.

To the bar B of the main frame is attached an angled arm a2, whichcarries the inking-pad Y b2 in the path of the characters on thetypeplate G, so that as the type-plate passes back and forth it receivesink from ythe said pad. The inking-pad b2 is slotted at the center toallow the type to be pushed downward through the said pad and itssupport upon the paper immediately over the platen 7c.

The operation of my improved type-writer is as follows: The paper beingplaced between the comb a and the roller p, as shown in Fig. 5, thetype-plate carriage 'F is moved backward or forward until the index g isopposite the character to be printed. At the same time it is determinedwhether the character shall be upper or lower case by the moving of thetype-plate G back or forward by means of the handle I. When thecharacter upon the typle-plate is in position for printing, the lever Ois depressed, thereby bringing the bar q into contact with theprinting-lever L, forcing the stud d downward upon the typeplate, andthe said plate, being of elastic material, is pushed downward, so as tocause an impression of the character upon the paper extending across theface of the platen 7c. While the lever O is passing downward, the pawl oengages the ratchet-bar n and moves it forward one notch before theprinting is done. At the same time the registering-lever M engages theunder side of the ratchet-bar,

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not only `preventing the ratchet-bar and paper-carriage attached theretofrom being carried too far, but also holding the paper-carriage in afixed position during the instant of printing. When the end of a line isreached, the pawl 0' is lifted, the paper-carriage frame J is returnedto the point of starting, and the roller p is turned through a part of arevolution by swinging the lever v vA new line is then begun and theoperation proceeds as before.

Having thus described my invention, I claim as new and desire t-o secureby Letters Patentl. In a type-writenthe combination, with a carriagecarrying a type-plate and provided with aseries of apertures and aplatenbelow the same, of a printing-lever provided with a stud adapted toengage the type-plate,l a'keylever provided with a bar extending throughthe frame and adapted to engage a printinglever, and a downwardlyprojecting arm adapted to engage the apertures of the carriage,substantially as and for the purpose set forth.

2. In a type-writer, the combination,I with IIO the paper-carriage frameJ, provided with a double ratchet-bar n and the printing-lever L, of theregistering-lever M, arranged to be operated by the printing-lever, thekey-lever O, and the pawl O', adapted to be operated by the key-lever,substantially as described.

3. In a type-Writer, the combination, 'with the paper-carriage providedwith ratchet-bar and the printing-lever, of a key-lever adapted tooperate the printing-lever, a pivoted lever loosely connected to andoperated by the keylever, and a pawl pivoted tothe said lever andadapted to engage the ratchet-bar of the paper-carriage, substantiallyas herein shown and described.

4. In a type-Writer, the combination, with the type-plate G, of thebrackets a, the slides d, the carriage F, and the levers f f pivoted tothe carriage and connected with the slides d, substantially asspecified. y v

- JAMES A. WALLACE.v

Witnesses: V

M. C. PORTER,

D. M. HARKRADER.

